ASTROSAT CZTI

Data Quality Report

Orbit 06402

Creation date: 2024-06-27T15:06:44.971349
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C02_011T01_9000000850_06402cztM0_level2.evt modeM0/AS1C02_011T01_9000000850_06402cztM0_level2_quad_clean.evt
Size (bytes)1,870,372,800314,182,080
Size1.7 GB 299.6 MB
Events in quadrant A14,246,3561,962,906
Events in quadrant B12,669,4622,003,853
Events in quadrant C11,526,7042,009,204
Events in quadrant D16,541,7931,848,242

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05000
B05000
C05000
D05000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0581957
B0536496
C0513686
D0651466

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A245669123.712448%
B245668303.378653%
C245663001.221200%
D2456621628.800782%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 26471 24571 245 245 0.93% 1.00%
B 26471 24571 102 102 0.39% 0.42%
C 26471 24571 0 0 0.00% 0.00%
D 26471 24571 1484 1484 5.61% 6.04%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 251 1769170 2899.26 2999 2931 609.2
A 15 236 483437 788.74 2999 2931 609.2
A 8 15 347699 565.93 2999 2931 609.2
B 4 81 450303 766.17 3029 2958 583.9
B 10 246 120306 200.98 3029 2958 583.9
B 0 214 94838 157.36 3029 2958 583.9
C 8 208 37977 51.51 2929 2950 680.0
C 1 16 28290 37.26 2929 2950 680.0
C 13 61 23229 29.82 2929 2950 680.0
D 4 95 4317472 6203.01 2839 2754 695.6
D 2 152 507284 725.33 2839 2754 695.6
D 11 241 479490 685.37 2839 2754 695.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter